Signal-lamp mounting



Sept. 24, 1929.

B. F. MlEssNER SIGNAL LAMP MOUNTINGV Filed Aug. 21, 192,5

Patented Sept. Z4, 1929 UNITED STA BENJAMIN F. MIESSNER, F SOUTH ORANGE, NIZWV JERSEY siciiv'iiri LAMP MoUN'rrNG Apiication fiieanugust 21, 1925. seriai No. 51,713. M

lThis invention relates to mounting means for pilot lamps.

The present invention is primarily intended for use in connection with a radio receiving apparatus wherein there is employed a panel and it is desired to mount a pilot lamp in said panel so that the same can be easily observed. It is desirable that a lens be provided tor the pilot lamp which will protect as well as enhance the appeaiance of the same; and it is also desirable that the pilot lamp per se be easily removable in order that a renewal lamp may be substituted without ditliculty. c y

In carrying out my invention I provide a lamp and lens assembly which `forms a compact unit and permits quick renewal of the lamp. I also provide means whereby said assembly may be positioned or removed from a panel in a quick and easy manner; and when positioned automatically establish an electric circuit through the pilot lamp and at time 01:' removal automatically break said circuit.

The general object ot the invention is to provide means whereby the above operations and results may be obtained.

Other objects, and objects relating to the details ot construction, combination and arrangement of parts will hereinafter appear in the detailed description to follow:

The invention is illustrated by way ot' eirainple in the accompanying drawings, in which z f y Figure 1 is a fragmentary perspective view ofa radio cabinet with the present invention applied,

Figure 2 is a horizontal sectional view through the pilot lamp and mounting means therefor as shown in Figure 1,

Figure 3 is a group perspective showing the lamp and lens unit when removed from its supporting member, and

Figure l is an exploded view showing -in perspective the different elements comprising the lamp and lens unit.

Referring to the drawings more particularly in Figure 1, 10 indicates generally a radio receiving cabinet of which 11 is the panel. In radio receiving sets where commercial current is used for supplying either filament or plate current, or both, it is desirable to employ a pilot lamp for indicating whether ornot the current the approximate amount of is being supplied, current being Yabsorbed by the radio receiving apparatus, and

other purposes. located where the same can The pilot lamp should be be easily observed and I lind the panel ofa receiving set to be the most practical location for the same. In

Figure 1, I have indicated generally at 12 a pilot lamp, and in Figures 2, 3 and 4, I have shown the manner in which the pilot lamp or light may .be mounted in a panel and the different elements constituting the mounting means therefor. y I As shown to advantage lamp and lens unit or asse in Figure 4, lthe mhly comprises a shell or sleeve 13, the one end of which is formed with a ring-like enlargement 14 which has its exterior periphery knurled as shown. The last named end of shell 13 is also bent or formed to provide an annul ar ledge 15 adapted to seat a'bead 16formed upon lens 17. The

lens 17 may have its inner and flat side covered with gelatin as indicated at 18 and the gelatin covering may be made of any color desired. Also thelens might be covered with colored paper or mica it desired.

A shortsleeve of insulating material 19 is fitted into the shell and s erves to hold the lens 17 in position.,Y At the upper ,end of the shell 13 there is provided a cally opposing T-sliaped sl pair of diametriots 20, and a pair of similarly arranged bayonet slots 21. The shell ,13 is prefer( bly stamped to provide the tangs 22 which are bent u pon the sleeve 19 for holding the same in position.

Tithin the innerend of the shell 13 there is removably fitted a lamp socket generally indicated bythe reference character 23. The socket 23 comprises a `ring or bushing 24 made of insulating material which carries a metallic sleeve 25 interiorly threaded for receiving the shell electrode 26 of an incandescent lamp 27. The sleeve 25 has its one end bent upon the associated end of bushing 24 as shown at 28. y

The bush-ing 24 lhas ,its

one end portion slightly reduced as shown at 29, and this reduced elndportion is easi ly slidable within Cil ion.v

the shell 13. The reduced end portion 29 of bushing 24 carries a pair of dowel pins 30 which may be brought into the T-shaped slots 2O and thereby lock the lamp socket 23 in the shell 13. 1

T he bushing 24 is further provided with a pair of diametrically opposed recesses 31, the purpose of which will later become apparent.

For supporting the lamp and lens unit there is provided what may be-termeda-socket support 32, said socket support being in the form of a sleeve made of insulating material -andprovided With a base flange 33. The flange 33 may be provided with openings kadapted to receive .bolts yor the like for securing the socket to panel 11. The panel should be pro-l vided With an opening 34 adapted for receiv ing theshell 13. The socket 32 is arranged to register With opening '34 in panel 11 and suitably secured to said panel as illustrated in Figure 2.

The socket 32 carries terminal 'bolts 35 and 36 which are preferably arranged as shown. A substantially Z-shapedconnector or linger 37 is employed for connecting the contact electrode 38 of lamp 27 to terminal bolt 36, and a similarly shaped connector or linger 39 is employed for connecting the shell electrode 26 of lamp 27 to'termina'l bolt`35. Terminal lugs 40 may be employed for connect-ing conducto'rs with the connectors 37 and 39. The connector -39 should be arranged so that its free end contacts with socket-sleeve 25.

When mounting a pilot lampby the means heretofore shown and described, the socket may first be mounted upon the inner side of the radio'cabinet panel as shown in Figure 2, and the pilot circuit connected to the finger or connector elements 37 and 39 through the means of the terminal lugs 40. The pilot lamp and lens unit should be assembled as shown in Figures `2 and 3. In assembling this unit the lens 17 and :sleeve 1.9 should first be positioned in the shell 13, and then the lamp may be vplaced in socket 23, and said socket positioned and locked in shell 13. It Will be observed that rotative movement-of the socket 23 in either direction after the same4 has been positioned .in shell 13, Will lock said y socket against removal from ysaid shell. It is also obvious that socket 23 can be quickly andeasily removed from the shell 13.

The assembled lamp and lens unit may be l inserted throughopeningl in panel l1l and extended into socket- 32. When inserting fthe unit into socket 32 said unit should be rotated to bring the dowel pins 42' into the vbayonet slots 21. After the unit has been fully inserted into socket 32, slight rotation thereof Will lock the same in said socket in an apparent manner. l

It should be pointed out that when the lamp and lens unit is 'fully positioned in socket`32, the spring connectors or'fingers 37 and 39,

establish a circuitth'roug'h the `lamp '27. If

it is desired to replace the lamp 27, then the lamp and lens unit should be removed from the socket 32, which may be followed by the removal of lamp and its socket 23 from shell 13. The lamp 27 can now be easily removed from its socket 23 and another lamp substituted therefor. Also with the lamp 27 and its socket 23 removed from shell 13, it is easy to remove the lens 17 if desired.

While I have shown and described my invention When applied to serve a certain purpose, I VWish it understood I am not to be limited to such application, as it is entirely obvious that the mounting means might be used for lamps serving an entirely different purpose. Also it is to be understood 'that While I have shovvnthe preferred form and construction of my lamp mounting means, I am not to be so limited, as I am aware that changes might be made in the general structure, combination and arrangement of `parts might be changed by those skilled in the art- Without departing from the spirit of my invention as indicated by the appended claim,

I claim:

In a pilot lamp mounting the combination of a sleeve having a plurality of pairs of bayonet slots at one end thereof, an annular rim upon the exterior of said sleeve and "at the other end thereof, an internal shelf Within said sleeve and in close proximity to said annular rim, a lens Within said sleeve, means for retaining the periphery of said lens against said internal shelf, a bushing adapted to fit within said sleeve,`pins upon said bushing for engagement with one pair of said bayonet slots, a conductive sleeveavithin said bushing, means for retaining the base of a standard pilot lamp Within and in conductive relation to said conductive sleeve, a socket having a recess therein of substantially equal diameter to said sleeve, pins carried said socket for engaging another pair of bayonet slots in said sleeve and means upon said socket for making electrical contact between `the terminals of said pilot lamp and a ,source of power.

In testimony whereof I affix my signature.

BENJAMIN F. MIESSNER.

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